REDLANDS -- Police are investigating allegations from three potential victims of a Citrus Valley High School teacher arrested Monday on suspicion of unlawful sex with a minor who authorities say fathered her infant child.

Since the woman's arrest, two more young men have come forward with new allegations against their former teacher -- a 22-year-old man who claims he had a relationship with her in 2008, when he was 16, and a 20-year-old man who claims he had relations with her in 2007, when he was 14.

Police arrested 28-year-old Laura Elizabeth Whitehurst based on a complaint from the parents of a 17-year-old boy who claimed Whitehurst had engaged in an inappropriate relationship with their son over the past year. Investigators believe Whitehurst's baby, born last month, is the product of that relationship.

Whitehurst, who is free on $25,000 bail, resigned from her position as a teacher with Redlands Unified School District on Tuesday, according to Sabine Robertson-Phillips, assistant superintendent at RUSD.

In the first case, police contend Whitehurst engaged in unlawful sexual intercourse with a student at Citrus Valley High School, where she had been teaching since 2010. Police say the relationship started last summer, when the boy was 16, and led to Whitehurst giving birth to his child last month.

On Tuesday, a 22-year-old man filed a complaint with police alleging a sexual relationship with Whitehurst in 2007. In an interview with the Daily Facts, he said he was 16 when their relationship began in the fall of 2007 and ended in 2008. It began with kissing in the classroom and led to a sexual relationship at her residence.

Redlands police detective Natasha Crawford said Whitehurst is "saying they had some type of relationship but not to that extent."

Crawford who is heading the investigation said she is still talking to Whitehurst but couldn't expand on their conversation.

Police believe Whitehurst was also having sex with a 14-year-old Redlands High School student during that same time period.

"The victim, now 20, told police that he and Whitehurst had sex in her classroom before school, as well as at her apartment and in her car," Redlands spokesman Carl Baker said in a prepared statement.

Prosecutors have yet to file charges against Whitehurst.

"We haven't received the case, but we are in communication with Redlands police," said Chris Lee, spokesman for San Bernardino County District Attorney Michael A. Ramos.

Baker said police are still investigating and expect to file a report to the District Attorney's Office next week.

The District Attorney's Office issued a statement on Wednesday seeking the public's help in identifying any other possible victims.

Whitehurst, a graduate of Redlands East Valley High School's class of 2003, began her career at RUSD in 2007 as an English teacher at RHS, where she worked until spring 2009, when she was laid off due to budget cuts, according Robertson-Phillips.

Whitehurst returned to the district in fall 2009 to teach at Orangewood High School and transferred to CVHS in the fall of 2010, Robertson-Phillips said. She worked at CVHS as an English teacher and adviser to clubs until resigning Tuesday.

The West Side neighborhood where Whitehurst's address is listed was quiet Tuesday night and Wednesday morning, except for the sound of traffic on nearby streets.

No one answered the door at Whitehurst's home, and she could not be reached by phone.